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Diffstat (limited to 'src/3rdparty/webkit/WebCore/platform/SharedBuffer.h')
-rw-r--r-- | src/3rdparty/webkit/WebCore/platform/SharedBuffer.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/platform/SharedBuffer.h b/src/3rdparty/webkit/WebCore/platform/SharedBuffer.h new file mode 100644 index 0000000..307bcd2 --- /dev/null +++ b/src/3rdparty/webkit/WebCore/platform/SharedBuffer.h @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#ifndef SharedBuffer_h +#define SharedBuffer_h + +#include "PlatformString.h" +#include <wtf/RefCounted.h> +#include <wtf/Forward.h> +#include <wtf/Vector.h> + +#if PLATFORM(CF) +#include <wtf/RetainPtr.h> +#endif + +#if PLATFORM(MAC) +#ifdef __OBJC__ +@class NSData; +#else +class NSData; +#endif + +#endif + +namespace WebCore { + +class PurgeableBuffer; + +class SharedBuffer : public RefCounted<SharedBuffer> { +public: + static PassRefPtr<SharedBuffer> create() { return adoptRef(new SharedBuffer); } + static PassRefPtr<SharedBuffer> create(const char* c, int i) { return adoptRef(new SharedBuffer(c, i)); } + static PassRefPtr<SharedBuffer> create(const unsigned char* c, int i) { return adoptRef(new SharedBuffer(c, i)); } + + static PassRefPtr<SharedBuffer> createWithContentsOfFile(const String& filePath); + + static PassRefPtr<SharedBuffer> adoptVector(Vector<char>& vector); + + // The buffer must be in non-purgeable state before adopted to a SharedBuffer. + // It will stay that way until released. + static PassRefPtr<SharedBuffer> adoptPurgeableBuffer(PurgeableBuffer* buffer); + + ~SharedBuffer(); + +#if PLATFORM(MAC) + NSData *createNSData(); + static PassRefPtr<SharedBuffer> wrapNSData(NSData *data); +#endif +#if PLATFORM(CF) + CFDataRef createCFData(); +#endif + + const char* data() const; + unsigned size() const; + const Vector<char> &buffer() { return m_buffer; } + + bool isEmpty() const { return size() == 0; } + + void append(const char*, int); + void clear(); + const char* platformData() const; + unsigned platformDataSize() const; + + PassRefPtr<SharedBuffer> copy() const; + + bool hasPurgeableBuffer() const { return m_purgeableBuffer.get(); } + + // Ensure this buffer has no other clients before calling this. + PurgeableBuffer* releasePurgeableBuffer(); + +private: + SharedBuffer(); + SharedBuffer(const char*, int); + SharedBuffer(const unsigned char*, int); + + void clearPlatformData(); + void maybeTransferPlatformData(); + bool hasPlatformData() const; + + Vector<char> m_buffer; + OwnPtr<PurgeableBuffer> m_purgeableBuffer; +#if PLATFORM(CF) + SharedBuffer(CFDataRef); + RetainPtr<CFDataRef> m_cfData; +#endif +}; + +} + +#endif |